with my 2001 smoking at below 40 degrees ad after testing air heater and fuel heater , test results showed problem was with sensor / element of fuel heater , with finding out there was no factory replacement decided to dig further to find fault, problem was an open circuit in wiring inside sensor housing, a quick solder job and testing of sensor and was working again.

 

Glad to hear you were able to get everything working properly.

 

wherer are you locate, sounds like quite the truck

 

Near Red Deer, Alberta

 

to far, anyways thanks